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# test unpack with a single channel specified
# to demonstrate a bug in glsl->tgsi dead-code elimination
[require]
GLSL >= 1.50
GL_ARB_gpu_shader_fp64
[vertex shader]
in vec4 vertex;
void main() {
gl_Position = vertex;
}
[fragment shader]
#extension GL_ARB_gpu_shader_fp64 : enable
out vec4 color;
uniform double given_doub;
uniform uint expected_uval;
void main()
{
/* Green if both pass. */
color = vec4(0.0, 1.0, 0.0, 1.0);
uint packval;
packval = unpackDouble2x32(abs(given_doub)).y;
if (packval != expected_uval) {
color.r = 1.0;
}
}
[vertex data]
vertex/float/2
-1.0 -1.0
1.0 -1.0
1.0 1.0
-1.0 1.0
[test]
uniform double given_doub 0.0
uniform uint expected_uval 0
draw arrays GL_TRIANGLE_FAN 0 4
probe rgba 0 0 0.0 1.0 0.0 1.0
uniform double given_doub 1.5
uniform uint expected_uval 1073217536
draw arrays GL_TRIANGLE_FAN 0 4
probe rgba 1 0 0.0 1.0 0.0 1.0
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